化工进展 ›› 2015, Vol. 34 ›› Issue (05): 1365-1370.DOI: 10.16085/j.issn.1000-6613.2015.05.030

• 材料科学与技术 • 上一篇    下一篇

O-磺化/O-季铵化-N,N-双烷基壳聚糖混合单分子膜及自组装囊泡性质

毛扬帆, 李明春, 辛梅华   

  1. 华侨大学材料科学与工程学院, 环境友好功能材料教育部工程中心, 福建 厦门 361021
  • 收稿日期:2014-05-18 修回日期:2015-01-01 出版日期:2015-05-05 发布日期:2015-05-05
  • 通讯作者: 辛梅华,教授,博士生导师.E-mailmhxin@hqu.edu.cn.
  • 作者简介:毛扬帆(1985—),女,博士研究生.
  • 基金资助:

    福建省重点科技项目(2009H0030)、福建省自然科学基金(2012J01396和2011J01312)及科技部科技人员服务企业项目(2009GJC40030).

Mixed monolayers and self-assembly vesicles of O-sulfonated-N,N-dilauryl chitosan/O-quaternized-N,N-dilauryl chitosan

MAO Yangfan, LI Mingchun, XIN Meihua   

  1. College of Material Science and Engineering, Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Huaqiao University, Xiamen 361021, Fujian, China
  • Received:2014-05-18 Revised:2015-01-01 Online:2015-05-05 Published:2015-05-05

摘要: 制备了具有良好油溶性的O-磺化-N,N-双十二烷基壳聚糖(HSDLCS)和O-季铵化-N,N-双十二烷基壳聚糖(QADLCS),研究了HSDLCS/QADLCS混合单分子膜和自组装囊泡性质的关系.结果表明,混合单分子膜的崩溃压(46.14mN/m)和最大压缩模量(Cs,max-1,98.85mN/m)较相应的单组分大;自组装形成球形囊泡的粒径在200~400nm;以维生素B12 为模型药物制备HSDLCS/QADLCS复合囊泡的载药量为0.1987mg/mg,包封率为38.25%,药物平衡释放率为23.68%.静电作用使得混合单分子膜的凝聚性和抗形变能力更强,复合囊泡药物通透性降低,结构更紧密.单分子膜的Cs,max-1与其相应载药囊泡药物平衡释放率呈一定的线性关系.

关键词: 壳聚糖, 磺化, 季铵化, 双烷基化, 单分子膜, 囊泡

Abstract: Oil-soluble O-sulfonated-N,N-dilauryl chitosan (HSDLCS) and O-quaternized-N,N-dilauryl chitosan (QADLCS) with similar substitution were synthesized. The properties of mixed monolayers and self-assembly vesicles of HSDLCS and QADLCS were studied. The mixed monolayers had larger collapse pressure (πc) larger maximum compression modulus (Cs,max-1) and limited molecular area (Aex) compared with HSDLCS and QADLCS monolayers. Spherical self-assembly vesicles were formed in diameter 200—400nm. Using Vitamin B12 as model drug,drug loading and encapsulation efficiency of complex vesicles were 0.1987 mg/mg and 38.25%,and equilibrium rates of Vitamin B12 release was 23.68%. Electrostatic attraction existing between the hydrophilic groups of HSDLCS and QADLCS resulted in stronger anti-deformation ability and cohesion of the mixed monolayers,decreased drug permeability of complex vesicles,and more tight structure of vesicles.Therer was a linear relationship between the Cs,max-1 of monolayers and equilibrium drug-release rate of the vesicles.

Key words: chitosan, sulfonated, quaternized, dialkylated, monolayers, vesicles

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